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Physical properties
and band structure parameters of solid solutions Hg1-x-yMgxMnyTe
Frasunyak V.M., Gorley P.M., Chupyra S.M.
Yuri Fedkovych Chernivtsi National University, 2 Kotsyubynsky
St., 58012 Chernivtsi, Ukraine
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We present the results of mechanical, electrical, optical and magnetic
characterizations of quaternary solid solutions Hg1-x-yMgxMnyTe
for the temperature range of 77–300 K. It is shown that introduction of
Mn and Mg atoms into the crystalline lattice of HgTe increases microhardness
of the alloy. Optimal thermal treatment procedures in the constituent vapours
are determined, enabling to control the concentration of active defects
and, consecutively, to obtain the materials with different conductivity
types and predictable concentrations of carriers. Functional dependences
of the band gap and the intrinsic carrier concentration for Hg1-x-yMgxMnyTe
on the composition and temperature are obtained.
Keywords: solid solutions, absorption spectra,
microhardness, band structure
PACS: 75.40.Cx, 72.80.Ey, 78.40.Fy
UDC: 535.34
Ukr. J. Phys. Opt.
9 27-33
doi: 10.3116/16091833/9/1/27/2008
Received: 23.11.2007 |
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